java.lang.nullpointerexception error in array

for(int i=0;i>3;i++)

    public class TicTacToe
    {
        private int count=0;
        private String letter;
        private int[][]myArray;
private  int[][] myArray = new int[3][3];
//declare array here so that it will be visible in your //whole class

     public TicTacToe()
        {
     
           int[][] myArray = new int[3][3];//remove it
           for(int i=0;i>3;i++){
               for(int j=0;j>3;j++){
               myArray[i][j]=0;
            }
            }
     
        }
      public void nextMove(int s1,int s2){
            myArray[s1][s2]=1;//error is here
            count++;
     
            if(count==1||count==3||count==5||count==7||count==9){
                letter="O";
     
            }
            if(count==2||count==4||count==6||count==8){
                letter="X";
     
            }
     
           System.out.println("button"+s1+","+s2+":"+letter);
     
     
        }
    }